I'm sorry for updated so late, the weather was great and my mtb wants to be riding 😂
I don't know what was wrong with the plant but now she growing great. Transplant her at day 21 to 3.5 l pot with ugro Coco rhiza, buffered before with phed water with magnesium because I have not enough magnesium in my tap water.. Maybe one day I will buy an reverse osmosis system 🤔